package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatProperties properties;
    /*
    * 微信登录
    * */
    @Override
    public User wxlogin(UserLoginDTO userLoginDTO) {
        //用微信提供的接口  获得openid
        Map<String,String> map=new HashMap();
        map.put("appid",properties.getAppid());
        map.put("secret",properties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json=HttpClientUtil.doGet(WX_LOGIN,map);
        System.out.println(json);

        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        //判断openid是否为空   授权码可能为假
        if(openid==null)
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        //判断当前用户是否为新用户
        User user = userMapper.getByOpenid(openid);
        if(user==null){
            user=new User();
            user.setOpenid(openid);
            user.setCreateTime(LocalDateTime.now());
            userMapper.insert(user);
        }
        //返回user对象

        return user;
    }
}
